"Nobody cares" is a phrase often used to express feelings of insignificance or disregard. In a short description, it signifies a sense of disillusionment or frustration with the lack of attention or concern from others. It encapsulates the sentiment that one's thoughts, feelings, or actions are perceived as unimportant or irrelevant by those around them. This phrase can reflect a range of emotions, from resignation to defiance, depending on the context in which it's used.